System for cutting shapes preset in a continuous stream of sheet material
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United States of America Patent
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Dec 26, 2006
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N/A
app pub date -
Dec 10, 2002
filing date -
Dec 10, 2001
priority date (Note) -
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Abstract
Method and apparatus enable cutting out shapes (S) preset in moving sheet material (10) by locating coordinates of one or more fiducials (F,F2 . . . ) in the sheet material (10) with a vision system (12). The fiducials (F,F2 . . . ) correspond to a pattern (P) for the preset shape (S). A cutting system (11) superimposes the pattern (P) relative to the located one or more fiducials (F,F2 . . . ) for cutting out the preset shape (S) while the vision system (12) is concurrently locating subsequent one or more fiducials (F,F2 . . . ) in the moving sheet material (10). The concurrent processes of cutting and locating subsequent fiducials (F,F2 . . . ) are repeated substantially continuously. Preferably, using two or more fiducials (F,F2 . . . ), distortion is detected and the pattern (P) can be remapped before cutting for accurate superposition of the pattern (P) and distorted preset shape (S).
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